Random effects in planar arrays of thinwire dipoles
Abstract
The effects of random errors in the voltage excitation of a planar array of thinwire dipoles are analyzed. Mutuals are taken fully into account. The method of moments is applied iteratively in conjunction with a randomsampling process, to obtain mean farfield beam patterns and their expected variation, as well as several 'expectedgain' quantities. Sinusoidal expansion and weighting function are used. BlockToeplitz impedance redundancies and the zeros of the excitation matrix are utilized in an efficient solution routine. Separate array analysis at fundamental and harmonic frequencies yields expected ratios of harmonic to fundamental levels. The theory is outlined and typical results of computation are presented. There is a tendency, due to mutuals, to point the beam near broadside even when the phase is completely random. Significant gain degradation is predicted at harmonic frequencies.
 Publication:

IEEE Transactions on Electromagnetic Compatibility
 Pub Date:
 February 1978
 Bibcode:
 1978ITElC..20..223A
 Keywords:

 Antenna Arrays;
 Antenna Radiation Patterns;
 Computer Aided Design;
 Dipole Antennas;
 Electric Wire;
 Random Errors;
 Antenna Design;
 Electrical Impedance;
 Far Fields;
 Harmonic Analysis;
 Iterative Solution;
 Weighting Functions;
 Communications and Radar